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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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Take the nine pairs (a,b) with a+b=19; take the sum a*b+19 for all these nine pairs; ALL the sums are primes. 19 is the largest prime that will do this. [Bergot]


  Submitted: 2011-05-28 12:22:35;   Last Modified: 2011-05-28 16:04:50.

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